02-27-2023, 05:41 PM | #1 |
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640i N55 Water pump
Hey guys, my 2015 640i recently showed up a code 20A804 which states Coolnt Pump switched off due to blockage. Radiator fan blew on max speed after turning the car off. Car was not overheating. Coolant reservoir was low, I topped it back up for now and will check to see if the code comes back. First time this has happened. The research I've done points to a failing water pump. Parts are lookin to be around $500 if it is the waterpump. I usually do maintenance at home but this seems like a relatively large job. Has anybody here done a DIY on their 640i water pump? Or taken it to a shop if so how much was the labor/cost.
Thanks,
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02-27-2023, 05:58 PM | #2 |
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man just watched a YouTube video of some kid that replaced his fathers a few months back, he didn't go into full detail but its a start...
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02-28-2023, 05:26 AM | #3 |
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I’ve done mine on my 535, which should be very similar. It wasn’t too bad of a job. Look up videos on YouTube and search the forum for a water pump replacement on an N55.
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02-28-2023, 06:36 PM | #4 |
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Awesome thank you
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Got Boost? 2014 650xi F06 - Carbon Black 2015 640i F13 - Alpine White 2007 335i E90 JB4/HPF Gen 2 - Jet Black-Retired |
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03-03-2023, 07:55 PM | #5 |
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I have the water pump, thermostat, and oil filter housing gaskets. I plan the replace all this year before the pump fails. My 2015 640i GC has almost 76k on it. since I have to remove the intake manifold to replace the oil filter housing seals I plan to do an intake valve clean. All looks pretty straight forward if you are a DIYer. I've been in aviation for 40 years as a tech and engineer so I have no problems doing the work myself. I just don't enjoy crawling around on the floor much anymore.
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03-05-2023, 04:54 AM | #6 | |
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03-31-2023, 01:53 AM | #7 | |
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04-02-2023, 05:51 PM | #8 | |
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